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Three graphite tiles coated with B(4)C were mounted in the X-point strike region of JET during operations in 1991. The coatings remained adherent, though areas reached temperatures at which local melting occurred. Boron and deuterium analyses in the area surrounding the tiles suggest sublimation of boron was an important release mechanism, and that the region between the strike zones (the private flux region) is a major redeposition area.

Additional information

Authors: COAD J P, JET Joint Undertaking, Abingdon, Oxon. (GB);FARMERY B, University of Sussex, Brighton (GB);LINKE J, Forschungszentrum Jülich GmbH (DE);WALLURA E, Forschungszentrum Jülich GmbH (DE)
Bibliographic Reference: Report: JET-P(92)67 EN (1992) 12 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
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